#1330 Test Jackson defaultTyping configuration

Verify that configuration option for Jackson's defaultTyping is correctly converted and set on ObjectMapper.

Author: puneetbehl

runtime/src/test/groovy/io/micronaut/jackson/JacksonSetupSpec.groovy

@@ -69,6 +69,26 @@ class JacksonSetupSpec extends Specification {
         applicationContext?.close()
     }
 
+    void "verify that the defaultTyping configuration option is correctly converted and set on the object mapper"() {
+        given:
+        ApplicationContext applicationContext = new DefaultApplicationContext("test")
+        applicationContext.environment.addPropertySource(MapPropertySource.of(
+                'jackson.dateFormat': 'yyMMdd',
+                'jackson.defaultTyping': 'NON_FINAL'
+        ))
+        applicationContext.start()
+
+        expect:
+        applicationContext.containsBean(ObjectMapper.class)
+        ((ObjectMapper.DefaultTypeResolverBuilder) applicationContext.getBean(ObjectMapper.class).deserializationConfig.getDefaultTyper(null))._appliesFor == ObjectMapper.DefaultTyping.NON_FINAL
+
+        applicationContext.containsBean(JacksonConfiguration)
+        applicationContext.getBean(JacksonConfiguration).defaultTyping == ObjectMapper.DefaultTyping.NON_FINAL
+
+        cleanup:
+        applicationContext?.close()
+    }
+
     @Unroll
     void 'Configuring #configuredJackonPropertyNamingStrategy sets PropertyNamingStrategy on the Context ObjectMapper.'() {
         when: